recommendations. >> reporter: can you tell us us -- >> it'll take several weeks for us to put out the final guidance that would announce all the parameters around the enforcement policy. and they will likely be about a 30-day delayed effective date, as is customary with fda's good guidance practices. at that point, all flavored e-cigarettes other than tobacco flavor would have to be removed from the market. tobacco-flavored e-cigarettes, their manufacturers would, by may 2020, have to file for approval by fda of their products. the other flavored many products can also file, but it would be off the market until approved by the fda. the obama administration had allowed these products to go onto the market in an unregulated way by delaying any enforcement, in the hopes that people who are using combustible tobacco would transition to a